Smog Pump Question
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Senior User
Joined: Jul 2000
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From: Lima, OH
Smog Pump Question
This may seem like a silly question, but what is the purpose of the smog pump, and what would the effects be of removing it?
TrailDawg
https://www.ford-trucks.com/dcforum/User_files/3aaa4bac6f539876.jpg
1993 F150 2WD
4.9L-Auto
Pro-Comp Stage-2 6" lift
Auburn Pro-Series Diff. w/4.30:1 gears
35x12.50x15 General Grabber MT's
http://www.geocities.com/ProjectTrailDawg
TrailDawg
https://www.ford-trucks.com/dcforum/User_files/3aaa4bac6f539876.jpg
1993 F150 2WD
4.9L-Auto
Pro-Comp Stage-2 6" lift
Auburn Pro-Series Diff. w/4.30:1 gears
35x12.50x15 General Grabber MT's
http://www.geocities.com/ProjectTrailDawg
Posting Guru
Joined: Jan 2001
Posts: 2,358
Likes: 3
From: Nebraska
Smog Pump Question
I have been told it's there to pump air into the exhaust so it burns cleaner. I'm not sure if it has any other purpose. I took mine off just last weekend and don't notice any difference at all.
1986 F-150 4x4 300 I6 NP435
1986 F-150 4x4 300 I6 NP435
Senior User
Joined: Jun 2000
Posts: 464
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Smog Pump Question
The smog pump's purpose is to provide air into the exhaust right before the catalytic converter so the exhaust fumes that are not burned can be burned. From what I understand and have read on the subject, this air injection into the exhaust reduces hydrocarbons(unburned fuel) rather effectively. The pump provides air to help the combustion process outside the engine. Parasitic power loss should be less the 1hp at the most! I would keep it on the engine so it produces clean exhaust and doesn't pollute the air we breath.
1994 Ford F150
300-6
Highly Modified and more to come!
1994 Ford F150
300-6
Highly Modified and more to come!
Thread Starter
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Senior User
Joined: Jul 2000
Posts: 429
Likes: 0
From: Lima, OH
Smog Pump Question
Don't plan to remove it...I like breathing clean air. Was just curious because it's going to be in the way of the lower radiator hose when I install my body lift. I'll just have to find me a radiator hose that will snake its way around it.
TrailDawg
https://www.ford-trucks.com/dcforum/User_files/3aaa4bac6f539876.jpg
1993 F150 2WD
4.9L-Auto
Pro-Comp Stage-2 6" lift
Auburn Pro-Series Diff. w/4.30:1 gears
35x12.50x15 General Grabber MT's
http://www.geocities.com/ProjectTrailDawg
TrailDawg
https://www.ford-trucks.com/dcforum/User_files/3aaa4bac6f539876.jpg
1993 F150 2WD
4.9L-Auto
Pro-Comp Stage-2 6" lift
Auburn Pro-Series Diff. w/4.30:1 gears
35x12.50x15 General Grabber MT's
http://www.geocities.com/ProjectTrailDawg
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Mar 22, 2001 12:58 AM
